Re: smart car turbo - Right CC's but wrong RPM's though.
Think cubic litres of air per minute.
smart cars (early ones are 600cc, later 700cc) rev to 5500 RPM, starts to come on boost at 2000rpm making 3.5 to 4 psi.
So lets half the flow rate by putting one on each cylinder of a hyo, that way would start to come on boost at 4000rpm , and at hyo's redline of 10500rpm , the turbo would still be dealing with the same cubic gas flow rate as the car would. With some boost control supposedly possible to get higher boost pressure.
i had thought this through, but if ive missed something, let me know
Theyre also quite compact and relatively cheap